In MN they used to give a flat metal "tag" similar to metal seals on semi trailers when you bought your license. Once you slipped it through a cut between the deer's lower rear leg bone and the tendon and clipped it shut, there was no way to remove it without destroying "the tag" to prevent reuse.

Then they went to peel and stick tags you tore off the license that usually didn't stick together once you got it wet with snow or blood in the process of slipping it through. Now you can just use wire or string and attach it after dragging out to avoid losing it.

Too much info. I'm sure.